What is needed for work to be done?
a force must push on an object without moving it.
a force must pull on an object without moving it.
a force must cause an object to move along the same direction as the force.
a force must act on an object while an equal force acts oppositely on the object.

Look at the reaction below: ca(hco3)2 --> caco3 + co2 + h2o first, balance the reaction. once balanced, use dimensional analysis or another method to find out how many moles of carbon dioxide will be produced if we start with 16.5 moles of calcium bicarbonate (calcium hydrogen carbonate). = mol of co2 number needs to be reported to three significant figures.

What reaction is taking place? 02 + c3h8 = h20 + co2

Miner's coal distributors does not mine coal itself, nor does it even store or handle the coal. instead, miner's solicits orders for low sulfur coal from other firms, then purchases the required amount from suppliers and directs them to ship the coal to its customers. what is miner's